mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_STM32F3XX/pwmout_api.c@621:9c82b0f79f3d, 2015-09-11 (annotated)

Committer:
mbed_official
Date:
Fri Sep 11 09:30:09 2015 +0100
Revision:
621:9c82b0f79f3d
Parent:
227:7bd0639b8911 
Synchronized with git revision 6c1d63e069ab9bd86de92e8296ca783681257538



Full URL: https://github.com/mbedmicro/mbed/commit/6c1d63e069ab9bd86de92e8296ca783681257538/



ignore target files not supported by the yotta module

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 155:8435094ec241 1 /* mbed Microcontroller Library
mbed_official 155:8435094ec241 2 *******************************************************************************
mbed_official 155:8435094ec241 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 155:8435094ec241 4 * All rights reserved.
mbed_official 155:8435094ec241 5 *
mbed_official 155:8435094ec241 6 * Redistribution and use in source and binary forms, with or without
mbed_official 155:8435094ec241 7 * modification, are permitted provided that the following conditions are met:
mbed_official 155:8435094ec241 8 *
mbed_official 155:8435094ec241 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 155:8435094ec241 10 * this list of conditions and the following disclaimer.
mbed_official 155:8435094ec241 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 155:8435094ec241 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 155:8435094ec241 13 * and/or other materials provided with the distribution.
mbed_official 155:8435094ec241 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 155:8435094ec241 15 * may be used to endorse or promote products derived from this software
mbed_official 155:8435094ec241 16 * without specific prior written permission.
mbed_official 155:8435094ec241 17 *
mbed_official 155:8435094ec241 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 155:8435094ec241 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 155:8435094ec241 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 155:8435094ec241 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 155:8435094ec241 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 155:8435094ec241 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 155:8435094ec241 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 155:8435094ec241 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 155:8435094ec241 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 155:8435094ec241 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 155:8435094ec241 28 *******************************************************************************
mbed_official 155:8435094ec241 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 155:8435094ec241 31 #include "pwmout_api.h"
mbed_official 155:8435094ec241 32
mbed_official 155:8435094ec241 33 #include "cmsis.h"
mbed_official 155:8435094ec241 34 #include "pinmap.h"
mbed_official 155:8435094ec241 35
mbed_official 155:8435094ec241 36 // TIM2 cannot be used because already used by the us_ticker
mbed_official 155:8435094ec241 37 static const PinMap PinMap_PWM[] = {
mbed_official 155:8435094ec241 38 // {PA_0, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 155:8435094ec241 39 // {PA_1, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 155:8435094ec241 40 {PA_1, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1N
mbed_official 155:8435094ec241 41 {PA_2, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1
mbed_official 155:8435094ec241 42 {PA_3, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH2
mbed_official 155:8435094ec241 43 // {PA_5, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 155:8435094ec241 44 {PA_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 155:8435094ec241 45 {PA_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 155:8435094ec241 46 // {PA_7, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 155:8435094ec241 47 {PA_8, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1
mbed_official 155:8435094ec241 48 {PA_9, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2
mbed_official 155:8435094ec241 49 // {PA_9, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH3
mbed_official 155:8435094ec241 50 {PA_10, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3
mbed_official 155:8435094ec241 51 // {PA_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH4
mbed_official 155:8435094ec241 52 {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_11)}, // TIM1_CH4
mbed_official 155:8435094ec241 53 // {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 155:8435094ec241 54 {PA_12, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 155:8435094ec241 55 // {PA_12, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 155:8435094ec241 56 {PA_13, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 155:8435094ec241 57 // {PA_15, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 155:8435094ec241 58
mbed_official 155:8435094ec241 59 {PB_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 155:8435094ec241 60 {PB_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 155:8435094ec241 61 // {PB_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 155:8435094ec241 62 {PB_4, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 155:8435094ec241 63 {PB_5, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM17_CH1
mbed_official 155:8435094ec241 64 {PB_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 155:8435094ec241 65 {PB_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1N
mbed_official 155:8435094ec241 66 {PB_8, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 155:8435094ec241 67 {PB_9, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 155:8435094ec241 68 // {PB_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH3
mbed_official 155:8435094ec241 69 // {PB_11, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH4
mbed_official 155:8435094ec241 70 {PB_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 155:8435094ec241 71 {PB_14, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH1
mbed_official 155:8435094ec241 72 // {PB_14, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 155:8435094ec241 73 {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH2
mbed_official 155:8435094ec241 74 // {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM15_CH1N
mbed_official 155:8435094ec241 75 // {PB_15, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH3N
mbed_official 155:8435094ec241 76
mbed_official 155:8435094ec241 77 {PC_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH1
mbed_official 155:8435094ec241 78 {PC_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH2
mbed_official 155:8435094ec241 79 {PC_2, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH3
mbed_official 155:8435094ec241 80 {PC_3, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH4
mbed_official 155:8435094ec241 81 {PC_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH1N
mbed_official 155:8435094ec241 82
mbed_official 155:8435094ec241 83 {PF_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 155:8435094ec241 84
mbed_official 155:8435094ec241 85 {NC, NC, 0}
mbed_official 155:8435094ec241 86 };
mbed_official 155:8435094ec241 87
mbed_official 155:8435094ec241 88 void pwmout_init(pwmout_t* obj, PinName pin) {
mbed_official 155:8435094ec241 89 // Get the peripheral name from the pin and assign it to the object
mbed_official 155:8435094ec241 90 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 227:7bd0639b8911 91 MBED_ASSERT(obj->pwm == (PWMName)NC);
mbed_official 155:8435094ec241 92
mbed_official 155:8435094ec241 93 // Enable TIM clock
mbed_official 155:8435094ec241 94 if (obj->pwm == PWM_1) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
mbed_official 155:8435094ec241 95 if (obj->pwm == PWM_15) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM15, ENABLE);
mbed_official 155:8435094ec241 96 if (obj->pwm == PWM_16) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);
mbed_official 155:8435094ec241 97 if (obj->pwm == PWM_17) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM17, ENABLE);
mbed_official 155:8435094ec241 98
mbed_official 155:8435094ec241 99 // Configure GPIO
mbed_official 155:8435094ec241 100 pinmap_pinout(pin, PinMap_PWM);
mbed_official 155:8435094ec241 101
mbed_official 155:8435094ec241 102 obj->pin = pin;
mbed_official 155:8435094ec241 103 obj->period = 0;
mbed_official 155:8435094ec241 104 obj->pulse = 0;
mbed_official 155:8435094ec241 105
mbed_official 155:8435094ec241 106 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 155:8435094ec241 107 }
mbed_official 155:8435094ec241 108
mbed_official 155:8435094ec241 109 void pwmout_free(pwmout_t* obj) {
mbed_official 155:8435094ec241 110 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 155:8435094ec241 111 TIM_DeInit(tim);
mbed_official 155:8435094ec241 112 }
mbed_official 155:8435094ec241 113
mbed_official 155:8435094ec241 114 void pwmout_write(pwmout_t* obj, float value) {
mbed_official 155:8435094ec241 115 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 155:8435094ec241 116 TIM_OCInitTypeDef TIM_OCInitStructure;
mbed_official 155:8435094ec241 117
mbed_official 155:8435094ec241 118 if (value < (float)0.0) {
mbed_official 155:8435094ec241 119 value = (float)0.0;
mbed_official 155:8435094ec241 120 } else if (value > (float)1.0) {
mbed_official 155:8435094ec241 121 value = (float)1.0;
mbed_official 155:8435094ec241 122 }
mbed_official 155:8435094ec241 123
mbed_official 155:8435094ec241 124 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 155:8435094ec241 125
mbed_official 155:8435094ec241 126 // Configure channels
mbed_official 155:8435094ec241 127 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
mbed_official 155:8435094ec241 128 TIM_OCInitStructure.TIM_Pulse = obj->pulse;
mbed_official 155:8435094ec241 129 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
mbed_official 155:8435094ec241 130 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCPolarity_High;
mbed_official 155:8435094ec241 131 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
mbed_official 155:8435094ec241 132 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
mbed_official 155:8435094ec241 133
mbed_official 155:8435094ec241 134 switch (obj->pin) {
mbed_official 155:8435094ec241 135 // Channels 1
mbed_official 155:8435094ec241 136 // case PA_0:
mbed_official 155:8435094ec241 137 case PA_2:
mbed_official 155:8435094ec241 138 // case PA_5:
mbed_official 155:8435094ec241 139 case PA_6:
mbed_official 155:8435094ec241 140 case PA_7:
mbed_official 155:8435094ec241 141 case PA_8:
mbed_official 155:8435094ec241 142 case PA_12:
mbed_official 155:8435094ec241 143 // case PA_15:
mbed_official 155:8435094ec241 144 case PB_4:
mbed_official 155:8435094ec241 145 case PB_5:
mbed_official 155:8435094ec241 146 case PB_8:
mbed_official 155:8435094ec241 147 case PB_9:
mbed_official 155:8435094ec241 148 case PB_14:
mbed_official 155:8435094ec241 149 case PC_0:
mbed_official 155:8435094ec241 150 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 155:8435094ec241 151 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 155:8435094ec241 152 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 155:8435094ec241 153 break;
mbed_official 155:8435094ec241 154 // Channels 1N
mbed_official 155:8435094ec241 155 case PA_1:
mbed_official 155:8435094ec241 156 // case PA_7:
mbed_official 155:8435094ec241 157 // case PA_11:
mbed_official 155:8435094ec241 158 case PA_13:
mbed_official 155:8435094ec241 159 case PB_6:
mbed_official 155:8435094ec241 160 case PB_7:
mbed_official 155:8435094ec241 161 case PB_13:
mbed_official 155:8435094ec241 162 // case PB_15:
mbed_official 155:8435094ec241 163 case PC_13:
mbed_official 155:8435094ec241 164 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 155:8435094ec241 165 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 155:8435094ec241 166 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 155:8435094ec241 167 break;
mbed_official 155:8435094ec241 168 // Channels 2
mbed_official 155:8435094ec241 169 // case PA_1:
mbed_official 155:8435094ec241 170 case PA_3:
mbed_official 155:8435094ec241 171 case PA_9:
mbed_official 155:8435094ec241 172 // case PB_3:
mbed_official 155:8435094ec241 173 case PB_15:
mbed_official 155:8435094ec241 174 case PC_1:
mbed_official 155:8435094ec241 175 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 155:8435094ec241 176 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 155:8435094ec241 177 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 155:8435094ec241 178 break;
mbed_official 155:8435094ec241 179 // Channels 2N
mbed_official 155:8435094ec241 180 // case PA_12:
mbed_official 155:8435094ec241 181 case PB_0:
mbed_official 155:8435094ec241 182 // case PB_14:
mbed_official 155:8435094ec241 183 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 155:8435094ec241 184 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 155:8435094ec241 185 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 155:8435094ec241 186 break;
mbed_official 155:8435094ec241 187 // Channels 3
mbed_official 155:8435094ec241 188 // case PA_9:
mbed_official 155:8435094ec241 189 case PA_10:
mbed_official 155:8435094ec241 190 // case PB_10:
mbed_official 155:8435094ec241 191 case PC_2:
mbed_official 155:8435094ec241 192 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 155:8435094ec241 193 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 155:8435094ec241 194 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 155:8435094ec241 195 break;
mbed_official 155:8435094ec241 196 // Channels 3N
mbed_official 155:8435094ec241 197 case PB_1:
mbed_official 155:8435094ec241 198 case PF_0:
mbed_official 155:8435094ec241 199 // case PB_15:
mbed_official 155:8435094ec241 200 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 155:8435094ec241 201 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 155:8435094ec241 202 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 155:8435094ec241 203 break;
mbed_official 155:8435094ec241 204 // Channels 4
mbed_official 155:8435094ec241 205 // case PA_10:
mbed_official 155:8435094ec241 206 case PA_11:
mbed_official 155:8435094ec241 207 // case PB_11:
mbed_official 155:8435094ec241 208 case PC_3:
mbed_official 155:8435094ec241 209 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 155:8435094ec241 210 TIM_OC4PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 155:8435094ec241 211 TIM_OC4Init(tim, &TIM_OCInitStructure);
mbed_official 155:8435094ec241 212 break;
mbed_official 155:8435094ec241 213 default:
mbed_official 155:8435094ec241 214 return;
mbed_official 155:8435094ec241 215 }
mbed_official 155:8435094ec241 216 }
mbed_official 155:8435094ec241 217
mbed_official 155:8435094ec241 218 float pwmout_read(pwmout_t* obj) {
mbed_official 155:8435094ec241 219 float value = 0;
mbed_official 155:8435094ec241 220 if (obj->period > 0) {
mbed_official 155:8435094ec241 221 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 155:8435094ec241 222 }
mbed_official 155:8435094ec241 223 return ((value > (float)1.0) ? ((float)1.0) : (value));
mbed_official 155:8435094ec241 224 }
mbed_official 155:8435094ec241 225
mbed_official 155:8435094ec241 226 void pwmout_period(pwmout_t* obj, float seconds) {
mbed_official 155:8435094ec241 227 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 155:8435094ec241 228 }
mbed_official 155:8435094ec241 229
mbed_official 155:8435094ec241 230 void pwmout_period_ms(pwmout_t* obj, int ms) {
mbed_official 155:8435094ec241 231 pwmout_period_us(obj, ms * 1000);
mbed_official 155:8435094ec241 232 }
mbed_official 155:8435094ec241 233
mbed_official 155:8435094ec241 234 void pwmout_period_us(pwmout_t* obj, int us) {
mbed_official 155:8435094ec241 235 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 155:8435094ec241 236 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
mbed_official 155:8435094ec241 237 float dc = pwmout_read(obj);
mbed_official 155:8435094ec241 238
mbed_official 155:8435094ec241 239 TIM_Cmd(tim, DISABLE);
mbed_official 155:8435094ec241 240
mbed_official 155:8435094ec241 241 obj->period = us;
mbed_official 155:8435094ec241 242
mbed_official 155:8435094ec241 243 TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
mbed_official 155:8435094ec241 244 TIM_TimeBaseStructure.TIM_Period = obj->period - 1;
mbed_official 155:8435094ec241 245 TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 155:8435094ec241 246 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
mbed_official 155:8435094ec241 247 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
mbed_official 155:8435094ec241 248 TIM_TimeBaseInit(tim, &TIM_TimeBaseStructure);
mbed_official 155:8435094ec241 249
mbed_official 155:8435094ec241 250 // Set duty cycle again
mbed_official 155:8435094ec241 251 pwmout_write(obj, dc);
mbed_official 155:8435094ec241 252
mbed_official 155:8435094ec241 253 TIM_ARRPreloadConfig(tim, ENABLE);
mbed_official 155:8435094ec241 254
mbed_official 155:8435094ec241 255 // Warning: Main Output must be enabled on TIM1, TIM8, TIM5, TIM6 and TIM17
mbed_official 155:8435094ec241 256 if ((obj->pwm == PWM_1) || (obj->pwm == PWM_15) || (obj->pwm == PWM_16) || (obj->pwm == PWM_17)) {
mbed_official 155:8435094ec241 257 TIM_CtrlPWMOutputs(tim, ENABLE);
mbed_official 155:8435094ec241 258 }
mbed_official 155:8435094ec241 259
mbed_official 155:8435094ec241 260 TIM_Cmd(tim, ENABLE);
mbed_official 155:8435094ec241 261 }
mbed_official 155:8435094ec241 262
mbed_official 155:8435094ec241 263 void pwmout_pulsewidth(pwmout_t* obj, float seconds) {
mbed_official 155:8435094ec241 264 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 155:8435094ec241 265 }
mbed_official 155:8435094ec241 266
mbed_official 155:8435094ec241 267 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
mbed_official 155:8435094ec241 268 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 155:8435094ec241 269 }
mbed_official 155:8435094ec241 270
mbed_official 155:8435094ec241 271 void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
mbed_official 155:8435094ec241 272 float value = (float)us / (float)obj->period;
mbed_official 155:8435094ec241 273 pwmout_write(obj, value);
mbed_official 155:8435094ec241 274 }